You could support GBATemp from Brave itself.
Here's how you can do it:
1. Download Brave and install it.
2. If you open it up for the first time, you will have a New Page. On it's side, there are cards for other services and Brave Rewards. Click on Brave Rewards and click "Start using Rewards"...
@Ophelia_Later@selever so when you apply a theme, it copies the files to home menu data, they stay there forever until you change to another theme, the same thing also applies with theme shuffling afaik so you can have 10 themes stored in the home menu data at one time, but once you manually change theme, it's gone